Add second host for kubernete environment

i have 2 rancher 1.6 server with full active-active ha completely work.
and then create kubernete environment with 1 add host for this environment.
after all container for k8s completely work. can log in to dashboard and another.
i add new host to k8s environment,But new host some container not work health check ipsec etcd. and first host in k8s environment have failed on ipsec. in k8s dashboard not have any new node too.

how i can fix this?